EP0780929A1 - Adaptateur de filtre electrique - Google Patents

Adaptateur de filtre electrique Download PDF

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Publication number
EP0780929A1
EP0780929A1 EP95930709A EP95930709A EP0780929A1 EP 0780929 A1 EP0780929 A1 EP 0780929A1 EP 95930709 A EP95930709 A EP 95930709A EP 95930709 A EP95930709 A EP 95930709A EP 0780929 A1 EP0780929 A1 EP 0780929A1
Authority
EP
European Patent Office
Prior art keywords
filter
filter unit
electrical adapter
contact element
front frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95930709A
Other languages
German (de)
English (en)
Other versions
EP0780929A4 (fr
Inventor
Yukihiro Takeda
Hisayoshi Shimasaki
Takeshi Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Carbide Industries Co Inc
Original Assignee
Nippon Carbide Industries Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Carbide Industries Co Inc filed Critical Nippon Carbide Industries Co Inc
Publication of EP0780929A1 publication Critical patent/EP0780929A1/fr
Publication of EP0780929A4 publication Critical patent/EP0780929A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7195—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter

Definitions

  • the present invention relates to an electrical adapter with a filter having a filter unit for removing electrical noise.
  • the present invention proposes an electrical adapter with a filter capable of reducing or attenuating noise without replacement of an electrical connector and a cable attached to a conventional electronic device.
  • the present invention provides an electrical adapter with a filter comprising a contact element, a filter unit, a front frame and a back frame, the filter unit being made of a filter comprising at least one member selected from the group consisting of a condenser, a ferrite and a resistor, the contact element being electrically connected to the filter unit, the contact element and the filter unit being held between the front frame and the back frame, and the front frame, the contact element, the filter unit and the back frame being fixedly assembled.
  • the electrical adapter with a filter thus constructed is disposed between a female type electrical connector and a male type electrical connector of a conventional electronic device.
  • the electrical adapter with a filter of the present invention exhibits high electromagnetic shielding effect, excellent noise attenuation effect and high reliability.
  • Fig. 1 is an exploded perspective view showing one embodiment of the electrical adapter with a filter according to the present invention.
  • Fig. 2 is an enlarged sectional view of an assembled state showing one embodiment of the electrical adapter with a filter according to the present invention.
  • Fig. 3 is a chart showing attenuation characteristics of the electrical adapter with a filter according to the present invention.
  • Fig. 1 is an exploded perspective view showing one embodiment of the electrical adapter with a filter according to the present invention
  • Fig. 2 is a sectional view of an assembled state showing one embodiment of the electrical adapter with a filter according to the present invention
  • Fig. 3 is a chart showing attenuation characteristics of the electrical adapter with a filter according to the present invention. It should be noted that the electrical adapter with a filter according to the present invention is not limited to the assembly shown in Figs. 1 and 2, and the attenuation characteristics shown in Fig. 3.
  • the electrical adapter with a filter comprises a filter unit 3 which is located at the central portion of the electrical adapter and into which contact elements 6 are inserted.
  • the filter unit 3 is fixedly assembled into a sandwiched structure by being sandwiched between a front frame 1 and a back frame 5.
  • a leaf spring 2 is disposed between the front frame 1 and the filter unit 3.
  • a body 4 is disposed between the back frame 5 and the filter unit 3.
  • the contact elements 6 are not particularly limited in material. Each contact element 6 has a male portion 6a and a female portion 6b which are similar in shape and dimension to the contact elements used as a conventional female type electrical connector and a male type electrical connector. The male portion 6a and the female portion 6b preferably form an integral body. It is also preferred that the contact elements 6 are in contact with a filter 8 of the filter unit 3 by soldering 7 or other means (for example, pressure contact, conductive adhesive, etc.). The contact elements 6 may be inserted into the filter unit 3 or they may be attached to a top surface or a side surface of the filter unit 3. The female portion 6b of the contact elements 6 are preferably inserted into hole portions formed in the body 4.
  • the filter unit 3 is predominantly made of the filter 8 which comprises at least one member selected from the group consisting of a condenser, a ferrite and a resistor. More specifically, the filter unit 3 comprises a substrate, the filter 8, a grounding electrode and a signal electrode. The filter unit 3 is attached with an array of the contact element 6. It should be noted that the filter unit 3 thus constructed is not particularly limited in material, shape, structure and method of manufacture.
  • the filter 8 is not particularly limited in method of manufacture, it is preferred to be formed by a printing method. It is more preferred that the filter 8 is formed by a thick-film printing method.
  • the material of the condenser which forms the filter 8 is not particularly limited, it is preferred to be made of a dielectric substance having a composition of a perovskite structure. It is more preferred that the condenser is made of a dielectric substance containing at least one member selected from the group consisting of Pb(Mg 1/3 Nb 2/3 )O 3 , Pb(Zn 1/3 Nb 2/3 )O 3 , PbTiO 3 , and Bi 2 O 3 .
  • the ferrite which forms the filter 8 may be formed on the surface of the substrate. Preferably, it is formed on an inner wall of the holes of the substrate.
  • the grounding electrode formed at the filter unit 3 is preferably formed in the area as wide as possible so that the electromagnetic shielding effect is enhanced.
  • the leaf spring 2 may or may not be used. In view of strength reinforcement of the adapter, however, it is preferred that the leaf spring 2 is used.
  • the leaf spring 2 is not particularly limited in shape, material, structure, etc. However, the use of the leaf spring for fixedly assembling each members into a sandwiched structure is advantageous for electrical connection between the grounding electrode of the filter unit 3 and the front frame 1 and/or the back frame 5, and for reinforcing the strength and holding the whole structure of the electrical adapter.
  • the number of the leaf springs 2 can be decided as desired.
  • the leaf spring 2 may preferably be used in such a way to sandwich the filter unit 3.
  • the grounding electrode of the filter unit 3 may simply be electrically connected to the front frame 1 and/or the back frame 5 by soldering, conductive adhesive, or the like. Electrical connection between the front frame 1 and the back frame 5 is preferably secured by a fixing jig, for example, nut, bolt, caulking.
  • the body 4 is not particularly limited in shape, material, structure, etc.
  • the use of the body 4 is not always necessary but preferable for the purposes of reinforcement of the contact elements 6 and attachment/detachment of the electrical connector.
  • the method for fixedly assembling the front frame 1, the leaf spring 2, the filter unit 3, the body 4 and the back frame 5 is not particularly limited. It is preferred, however, that they are assembled into a sandwiched structure as previously mentioned. They are preferably assembled with the use of nuts 9 and bolts 10, and more preferably with the use of eyelet. Particularly preferably, the front frame 1 and the back frame 5 are caulked each other.
  • the electrical adapter with a filter which exhibits high electromagnetic shielding effect and excellent noise attenuation effect can be provided.
  • the electrical adapter of the present invention is disposed between the conventional male and female electrical connector for the purpose of reducing or attenuating the noise in the conventional electric device.
  • the electronic device adapted with the electrical adapter of the present invention exhibits high reliability.
  • the electrical adapter with a filter can be disposed between the male and female electrical connector of a novel electronic device, and it exhibits high electromagnetic shielding effect, excellent noise attenuation effect and high reliability. Further, the electrical adapter can be manufactured at a lower cost.
  • the electrical adapter with a filter according to the present invention can be applied to a wide range of electronic devices.
  • the electrical adapter can be applied to communication equipment, imaging equipment, electronic devices for automobiles, peripheral equipment for computers, vending machines, ticket venders, "Pachinko(Japanese pin ball machines), amusement game machines, electronic amusement machines.
  • a ferrite layer is formed on an inner wall of a through-hole formed in an alumina ceramics substrate by screen printing a ferrite paste, followed by drying and calcining the paste.
  • a signal electrode is formed by screen printing an Ag-Pd conductive paste at a prescribed position, followed by drying and calcining the paste.
  • a dielectric layer is formed by screen printing a dielectric paste predominantly composed of Pb(Mg 1/3 Nb 2/3 )O 3 and PbTiO 3 at a prescribed position, followed by drying and calcining the paste.
  • a grounding electrode is formed by screen printing an Ag-Pd conductive paste at a prescribed position, followed by drying and calcining the paste.
  • a protective layer is formed by screen printing a glass paste at a prescribed position, followed by drying and calcining the paste.
  • the signal electrode, dielectric layer and grounding electrode thus formed form a condenser and are protected by the protective layer.
  • the condenser and the ferrite layer serve as the filter 8. In the manner as mentioned above, the filter unit 3 was manufactured.
  • the contact elements 6 in which the male portion 6a and the female portion 6b form an integral body were inserted into the through-holes of the filter unit 3, and securely fixed to the signal electrode or the grounding electrode by soldering 7.
  • the front frame 1, the back frame 5 and the leaf spring 2 were manufactured by pressing.
  • the body 4 was made from a resin.
  • the electrical adapter with a filter thus manufactured was disposed between electrical connectors.
  • the electrical adapter exhibited excellent productivity, high shielding effect, excellent noise attenuation effect and high reliability.
  • Attenuation characteristics of the electrical adapter with a filter thus manufactured was measured by a spectrum analyzer (manufactured by Hewlett Packard Co., Ltd.; type: 4396A). The result is shown by a broken line A in Fig. 3.
  • the electrical adapter with a filter was manufactured by almost the same manner as in Embodiment 1 except that no ferrite layer was formed on the filter unit 3 of Embodiment 1.
  • the electrical adapter with a filter thus manufactured was found to exhibit excellent effect as in Embodiment 1. Attenuation characteristics of the electrical adapter with a filter thus manufactured was measured by a spectrum analyzer (manufactured by Hewlett Packard Co., Ltd.; type: 4396A). The result is shown by a solid line B in Fig. 3.
  • the electrical adapter with a filter was manufactured by almost the same manner as in Embodiment 1 except that the body 4 of Embodiment 1 was not used.
  • the electrical adapter with a filter thus manufactured exhibited excellent effect as in Embodiment 1 at a lower cost.
  • the electrical adapter with a filter according to the present invention exhibits high productivity since it can be manufactured merely by fixedly assembling a front frame, a contact element, a filter unit and a back frame.
  • the electrical adapter with a filter also exhibits high shielding effect, excellent noise attenuation effect and high reliability at a lower cost.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Filters And Equalizers (AREA)
EP95930709A 1994-09-07 1995-09-06 Adaptateur de filtre electrique Withdrawn EP0780929A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6238586A JPH0878101A (ja) 1994-09-07 1994-09-07 電気フィルタアダプタ
JP238586/94 1994-09-07
PCT/JP1995/001773 WO1996008057A1 (fr) 1994-09-07 1995-09-06 Adaptateur de filtre electrique

Publications (2)

Publication Number Publication Date
EP0780929A1 true EP0780929A1 (fr) 1997-06-25
EP0780929A4 EP0780929A4 (fr) 1997-11-26

Family

ID=17032409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95930709A Withdrawn EP0780929A4 (fr) 1994-09-07 1995-09-06 Adaptateur de filtre electrique

Country Status (7)

Country Link
EP (1) EP0780929A4 (fr)
JP (1) JPH0878101A (fr)
KR (1) KR970705851A (fr)
CN (1) CN1157671A (fr)
CA (1) CA2198890A1 (fr)
TW (1) TW349280B (fr)
WO (1) WO1996008057A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755968C1 (de) * 1997-12-16 1999-09-09 Filtec Gmbh Adapter-Steckverbinder mit Planarfilter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1086060C (zh) * 1997-08-12 2002-06-05 鸿海精密工业股份有限公司 滤波连接器
KR101295518B1 (ko) * 2012-01-19 2013-08-09 신영철 전자파 차폐용 필터부재
CN111092282A (zh) * 2019-12-19 2020-05-01 杭州航天电子技术有限公司 一种组合框架式滤波结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5954666A (ja) * 1982-09-17 1984-03-29 松下電器産業株式会社 高誘電率磁器組成物
BR8401386A (pt) * 1983-03-30 1984-11-06 Du Pont Conector de filtro
BR8401396A (pt) * 1983-03-30 1984-11-06 Du Pont Conector eletrico para filtrar ampla faixa de frequencias
GB2167911B (en) * 1984-11-28 1988-08-10 Itt Electrical connector
DE3679010D1 (de) * 1985-07-26 1991-06-06 Amp Inc Uebergangsspannungsunterdrueckungseinrichtung.
JP2691181B2 (ja) * 1988-08-01 1997-12-17 京セラ株式会社 誘電体磁器組成物
JP2615977B2 (ja) * 1989-02-23 1997-06-04 松下電器産業株式会社 誘電体磁器組成物およびこれを用いた積層セラミックコンデンサとその製造方法
JPH04262382A (ja) * 1991-02-16 1992-09-17 Kitagawa Ind Co Ltd コネクタ評価用アダプタ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755968C1 (de) * 1997-12-16 1999-09-09 Filtec Gmbh Adapter-Steckverbinder mit Planarfilter
US6036546A (en) * 1997-12-16 2000-03-14 Filtec Filtertechnologie Fur Die Elektronikindustrie Gmbh Adapter for connecting together two signal transmission lines each terminating in multiple connectors

Also Published As

Publication number Publication date
JPH0878101A (ja) 1996-03-22
CA2198890A1 (fr) 1996-03-14
WO1996008057A1 (fr) 1996-03-14
CN1157671A (zh) 1997-08-20
TW349280B (en) 1999-01-01
EP0780929A4 (fr) 1997-11-26
KR970705851A (ko) 1997-10-09

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